Automatic fluib-controllik g device



A; P. ANDERSON AUTOMATIC FLUID CONTROLLING DEVICE Aprill 19, 1927.

Filed May 29,g 1922 s sheets-sheet 1 5 l April 19s L I? A. P. ANDERCNAUTOMATIC FLUID QONTROLLING DEVICE Filed May 29. 1922 3 ShtS--Shet 2vlNIH C) THVEHT 'DEL @Awm C) mlm l 625 185 April 19, 1927. A. P.ANDERSON f AUTOMATIC FLUID CONTROLLING DEvIcE Filed May 29. 1922 l 'ssheets-sheet s Alll illustrated in Fig. l,

Patented Apr. 19, i927.

l,t25,185l

PATNT OFlFlCE.

AUGUST P. ANDERSON, OF TOLEDO, OHIO.

AUTOMATIC FLUID-CONTROLLING DEVICE.

Application filed May 29,

My .invention has tor its object to provide an etiicient controllingdevice tor automatically controlling fluid, that is, a gas or liquid otany kind, in a suit-able pipe or syrien), or to control. the pressure ofthe lluid in such a pipe or system, by a means :uftuated according` toconditions that are to he maintained in such a system. rlhe inventionparticularly has tor its object to provide a device whereby the tiow ota fluidmay be regulated according to predetermined pressure or thermalconditions that it is desired to nlaintain.

The invention may be contained in constructions ot' difiere-mt- 'lormsllo illustrate :i practical application ot the invention l lave selecteda. structure or system containing); the invention as an example otembodinients ot' my invention and vfill describe the constructionhereinafter. The construction or system selected is illustrated in theaccompanying drawin l-Vigure l ot the drawings is a top view ot thecontrolling' device. F 2 illustrates a le vien' et the deviceillustrated in Fig'. 3 illustrates a. sectional view ot the 7ice takenon the line 3?) indicated in Fig. 4l illustrates a. sectional View oneof the parts ot the device illustrated Pia'. 1 which operates according`to the iid pressure exi@ ug in some part ot the `teni that controlled bythe device. Fig. es a side view et the part of the device G is asectional view et a direct plug valve. is a Sectional view ot a. part otthe valve illustrated in Fig'. (S, taken on a plane located at rigrhtangl s to the plane in Which the section shown in Fig'. (i is taken.Fig. 8 illustrates a sectional View ot the plug` ot the valve. Fig. 9illustrates diagrammatically the electrical connections between theparts constituting my invention. Fig. 10 is a sectional vieW ott themeans tor connecting one ot' the parts to a. switch, also illustrated inFig. 1. ln Figs. 1, 2 and 3, 1 is a base that may be located in a box 2Which may be provided With a. suitable cover tor enclosing` parte of thedevice.

'ihe particular 'structure illustrated Vin Figs. 1, 2 and 3 is tocontrol the tlo'wv ot water in any apparatus, such as a refrigerat-inn'apparatus, and also to control motor which may be used, as in theparticular eX- nniple selected, tor operatingi the con'ipressor ot aretrigerating apparatus. 4The pipe 3 is 1922. Serial No. 564,439.

connected With a source of water supply and also to the retrigeratingapparatus Where by the parts ot' the retrigeratingl apparatus, such asthe pressure cylinder of the compressor and the condenser, etcf7 may becooled in the manner Well known in the art. The pipe 3 may be connectedtothe controlling device` whereby the retrigerating apparatusisautomatically cooled, or, if desired, the controlling device may be usedto cont-rol the motor dependent ot the control ot the water {lov-v, orif desired, the controlling device may be completely cut oli from thecontrol of the water pressure and control oll the motor. The Water maybe short-circuited it desired through the pipe S52 in Which the valve823 is located. it the water tloiv is to be con-- trolled by the devicethe valve 8? is closed, Which causes the ivater to tloiv through thepipe 3, 'lhe pipe 3 isprovided with a valve fl having` the casing 5, Thevalve #li is an ordiinrry direct or ping valve. lt is provided with asuitable tapered plug- (i which seats in the casing 5. The plugl isprovided with the usual straight-Way opening 7. T he valve is thereforeopened and closed by merely giving the plug a quarter ot atv-.rn eitherto the right or to the lett.

The valve is providedv with a suitable epi-ing;l 8 to maintain theplug;a 6 seated in po Sition in the valve case. The valve also providedwith suitable packing nuts or rings and. packing n'iaterial so as tomaintain the valve tight as against any leakage in the manner welllnoivn in the art. The valve operates to control the Water flow throughthe pipe 3 to the refrigerator and at the saine linie control the motorthat operates` the ret i,(,reratingl apparatus.

The valve is operated to open and close the pipe leading to theretrigerating apparatus by means ot a motor 9 which reduces the pressurein the pipe 60. .Thev motor S) is connected-to a shat't 10 by means ot asuitable universal or exilole coupling; 11. Worm 12 is located on theshaft 10 and operates a worm Wheel 13 located on a shalt 14. The shatts10 and 14 are located in suitable bearings 15 that are supported inbrackets that are secured to the base 1 ot the device. The shaft '14% isalso provided with a Worin 16 that also operates on a Worin Wheel 17which is connected to the shaft 18. lfhe shaft 18 is also supported insuitable bearings 19 'which are located in brackets supported on thelease 1 of theldevice. The

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stood that the contact arms 45 and 46 of the switch 22 are in thereverse position of high or low according to the last positiontalren bythe contact 38 of the thermostat; that is, the contact 38 makes contactwith one or the other ot the contacts subsequent to a movement of theswitch 22, and hence the contact 39 .or 40 with which the contact 38makes contact is completed through the switch 22 by either the arm 45 or45. Thus when the apparatus has been actuated by reason oit the hightemperature the switch 22 is thrown into a position to connect thecontacts 41 and 43. When the teniperature surrounding the ther mcstat islowered and the contact 38 makes contact with the contact 39, thecircuit is completed through the switch 45, the line 47 to the lead line29. The motor 9 is actuated by the current passing through its armatureand tiehl through the lines and 36, which operates the switch 22 throughthe cam 23 to place the contact arm 46 of the switch 22 into connectionwith the contacts 42 and 43 and so that when the contact 38 makescontact with the contact the motor will again be actuated. The switch 22is not operated until the cam 23. hascompleted a quarter of a turn,namely, when the roller 24 has been either forced toits outermostposition by 'the cam or when the short radii ot the cam are in axialalignmentwith the pin 25 that carries the roller 24. This change ofcircuit connections being accomplished through the switch 22 upon theperformance ot' a quarter ot a turn ot the shaft 18, the motor circuit 9is immediately opened but the switch 22 is set for the subsequentoperation or' the motor 5').

The turning of the shaft 18 causes the switch 21 to be turned a quarterof a turn to close or open the switch and the valve ping (5 is alsoturned a quarter ot a turn, as heretofore described. The switch 21 isclosed when the valve 4 is open so that when the thermostat is loweredin temperature and contact is made with the contact 39 the circuitthrough the switch 21 is opened, but when contact is made with thecontact- 40 ot the thermostat through the operation ot' the motor 9 theswitch 21 is closed. This is when the temperature surrounding the pointto be controlled therinostatically .is high.

VJhen the switch 21 is closed the circuit is completed from the bladesof the switch 30 through the contacts 33, the lines 48, the switch 21,lines 49 to and through the pressure switch 50, and thence through thelines 51 to the motor 32 -ot the refrigerating apparatus. This causesthe motor 32 to be actuated, which causes a reduction ot thetemperature. The refrigerating apparat-us is thus operated until thethermostat responding to the reduction in the temperature produced bythe operation ot the motor 32, again completes the circuit through themotor 9 and causes the actuation ot the switch 21 and also of the valve4. The current through the motor 9 is shut oit and also the flow ot thewater through the pipe 3 is stopped which raises the pressure in thepipe (3() and causes the switch 50 to be opened 'and thus the motor32ceases to operate. It

will thus be seen that l have provided a meanswhereby the flow ot thewater through the parts ot the retrigerating apparat-us is controlled,so that the water is immediately shut off when the refrigeratingapparatus ceases to operate to reduce the temperature below thepredetermined point as determined by the setting ot the adjustable partsoit the thermostat. This results in the saving of the waterV during thecessation o1 the ope-rations of the refrigerating apparatus.

I have also provided a safety means whereby the refrigerating apparatuswill not be operated if the cooling medium not 'functioning, as torinstance, it' there is no flow of water through the pipe 3 to cool partsot the retrigerating apparatus. The motor 32 is also controlled by thepressure in the pipe 3, and so that the motor 32 willnot be operatedunless the apparatus is in condition tor operation.

In order to permit the motor 32 to be operated only when a flow ot a.cooling medium may exist through the parte to be cooled, the switch islocated in thecircuit ot the motor 32, unless the motor 32 is connecteddirectly to the main lines 29. rlChe switch 50 is provided with a pairof movable contact arms 52 which simultaneously make contact with theterminals or contacts i3-ot the switch when the switch 50 is closed Theswitch 50 is operatedby the spring pressed plunger' 54 which is actuatedby the diaphragm 55. The diaphragm 55 is secured in a housing 56 and isconnected to the housing 56 kby means ot' the cap rihe diaphragm issealed between the cap 57 and the body of the housing 56 by means ot thebolts 58 that extend through the peripheral portion of the diaphragm 55and clamp the periphery of the diaphragm between the cap 57 and the bodyportion of the housing 56. The housing 56 thus provides a chamber 59that communicates with the atmosphere. One side of the diaphragm issubjected to the pressure of the spring pressed plunger 54. l The cap 57is connected by means of the pipe 60 to the pipe 3 and thus thaty sideof the diaphragm 55 is subjected to the pressure of the fluid, such aswater, when it is under pres ire in the pipe 3. When the water is incondition to flow through the refrigerating apparatus its pressure istransmitted throughthe pipes and against the diaphragm 55 which lcausesthe diaphragm 55 to distend or move from the cap 57 and against thespring pressed plunger 54.

.he plunger 54 is operated 'in one direcllt) tion to press the diaphragm55 towards the cap 57 by the spring G1 which is located between theadjusting nut (32 and the plunger head 63. The nut 62 islocated in thehousing 56 and is adjusted according to the spring tension required tooperate the switch 50. Also the nut 62 is adjusted according to thepressure of the water that may exist in any particular locality :inwhich the retrigerating apparatus may be located, and according to thepredetermined low pressure point of the water in the pipe 3 that willcause the switch, 50 to be operated, that is, that will cause the switch50 to be opened. The plunger 5st is connected to the switch 5() by meansof a block 84 which is provided with a socketI for receiving the end ofthe actuating lever S5 of the switch 50. This connection issubstantially thefsame as the connection between the block 26v and theswitch For limitingt-he outward movement of the plunger 54 by theoperation et the. diaphragm an adjustable stop 86 may be providedagainst which the block 8f4 will abut.

I have thus provided a means whereby the refrigerating apparatus may notonly be automatically controlled, but will not bei operated unless theconditions are such tha it yshould be operated, it being understood thatthe controlling switch 50 may be used to control apparatus other thanrefrigerating apparatus and according to the conditions requisite forthe proper operation of such other apparatus.

The different parts of the mechanism are provided with suitableadjusting devices in order to insure thev proper timing and set,- tingof the parts.

I claim:

1. In an automatic refrigerant controlling device for electric thermicsystems, a -source o't' current, a source of cooling water, an electricmotor for operating the thermic system and connected to the said sourceof current, a second motor connected to the source ot current, coolingpipes connected to the source o'f supply of water, a valve forregulating the flow of the water, a switch for connecting the lirstnamed motor with the said source ofy current, an enclosed diaphragmconnected to the said switch the said diaphragm operated by the pressureot the water in the said pipes and controlled by the saidvalve, athermostatic switch having highand low temperature contact points, aswitch located in the circuit ot' the second motor for connectingthevsecond motor with the said circuit andl operated by the second motorwhen the valve has been opened and when it has been closed to connectthe second motor to the low ten'iperature contact point and the highten'iperature contact point of the thermostat respectively.

Q. In an automatic refrigerant controlling device for electric thermicsystems, a source or' current. a source of cooling water. an electric.motor for operating the thermic system and connected to the saidsourceof current, a second motor connected to the source oi current,y coolingpipes connected to the source of supply water, a valve for regulatingthe flow of the water, a snap switch for connecting the tirst namedmotor with the said source of current, an enclosed diaphragni connectedto the said switch the said diaphragm operated by the pressure oi thewater in the said pipes and controlled by the said valves, andoperatingthe switch to close the circuit when the pr ssure of the waterhas reached al predetermined point, a t-hermostatic switch having highand low temperature contact points, a snap switch located in the circuitof the second motor for connecting the second motor with the saidcircuit and operated by the second motor when the valve has been openedand when it has been closed to connect the second motor to the lowtemperature contact point and the high temperature contactpoint ot' thethermostat respectively.

In testimony whereof I have hereunto subscribed myvname to thisinvention.

AUGUST P. ANDERSON.

